TWIGG, Carol A. USING ASYNCHRONOUS LEARNING IN REDESIGN: REACHING AND RETAINING THE AT-RISK STUDENT. Online Learning, Boston, MA, v. 8, n. 1, 2019. DOI: 10.24059/olj.v8i1.1834. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/1834. Acesso em: 1 apr. 2026.